Mobile Engineer

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At thermondo, our mission is to decarbonize every home, and technology is our primary lever for change. We are disrupting a massive industry bogged down by legacy systems and manual work. This is where you come in. We build the intelligent software and automation that gives us a decisive edge, allowing us to operate at a scale and efficiency our competitors can't match.

We are looking for a skilled and motivated Mobile Engineer (f/m/d) to contribute directly to the development of our native mobile applications, with a strong focus on Android, and multi-platform solutions. This role is ideal for a hands‑on engineer who is eager to grow their technical scope, take ownership of software development, and contribute to both mobile and adjacent full‑stack systems.

• Develop Native Mobile Features. You will develop, test, and maintain high-quality features for our native Android/iOS applications (Kotlin Multiplatform Mobile), focusing on efficient UI implementation, state management, and robust data integration.
• Contribute to Mobile Architecture. You will implement technical designs, focusing on best practices for performance tuning, offline/online capabilities, and stability in our mobile applications.
• Collaborate on Integration. You will collaborate closely with backend and platform teams to ensure reliable integration of mobile features.
• Take Ownership of Tasks. You will take ownership of assigned features and tasks from definition to deployment, translating requirements into technical implementation plans.
• Support AI Implementation. You will implement and support patterns for integrating pre‑defined LLM services and AI-native features into the mobile application codebase.
• Improve Development Practice. You will contribute to the improvement of mobile development workflows, participate in code reviews, and share knowledge within the engineering team.

• Experienced:
  You have 3–5 years of hands‑on experience in native mobile development, preferably within a fast‑paced product environment.
• Mobile and Growth Mindset. You are proficient in native mobile development and eager to grow into a versatile full-stack contributor.
  • You are proficient in native Android development (Kotlin) and modern Android architecture.
  • You have experience with or a strong willingness to learn and contribute to our future iOS application.
  • You are comfortable reasoning about API interactions and system data flows.
  • Python knowledge is a strong bonus and an asset for contributing to our internal systems.
• Self-Driven. You are capable of managing your tasks and prioritizing effectively, seeking guidance when necessary but driving implementation independently.
• Pragmatic. You focus on delivering reliable, maintainable solutions and know when to use existing technology versus learning new tools.
• Strong Collaborator. You communicate technical challenges clearly within the team and contribute effectively to technical documentation.

• Production AI:
  Familiarity with concepts like prompt engineering.
• Mobile Dev Ops:
  Hands‑on experience improving CI/CD pipelines, automated testing, and build/release processes for mobile apps.
• Event‑Driven Systems:
  Experience working with asynchronous patterns and message queues (like Kafka or SQS/SNS) for reliable data exchange with mobile clients.
• Legacy Migration:
  Experience contributing to the modernization or refactoring of existing application codebases.
• A passion for climate tech. You’re motivated by our mission to decarbonize homes and are excited to apply your skills to a problem that matters.

• Join a team of Product Managers, Software Engineers, Designers, Data and Salesforce people who are excellent in their craft and are happy to share their knowledge and help you grow alongside them.
• Our team is using the latest frameworks and is working with a modern tech stack to build powerful products for our customers, craftspeople and internal teams.
• We offer a challenge with purpose – the better our tech, the more people will live climate‑neutral and the better the world becomes for future generations.
• We…